材料科学
渗流阈值
复合材料
碳纳米管
墨水池
电阻式触摸屏
纳米技术
电阻率和电导率
电气工程
工程类
作者
Yunhao Liu,Xiao‐Hua Ma,Haizhai Zhang,Jitai Sun,Jun Qian,Xin Wang
出处
期刊:ACS applied electronic materials
[American Chemical Society]
日期:2022-02-02
卷期号:4 (2): 814-822
被引量:6
标识
DOI:10.1021/acsaelm.1c01172
摘要
With the development of flexible electronic technology, there is a growing demand for electrothermal materials that are environmentally friendly, safe, low-cost, and large-scale producible for efficiently solving thermal management issues. In this study, low-cost water-based carbon series electrothermal ink is prepared by a dispersion and grinding method, and the electrothermal films with various areas can be prepared on a large scale by screen printing. Simultaneously, the three-dimensional (3D) conductive network structure of graphene nanosheets (GNSs)/multiwalled carbon nanotubes (MWCNTs)/carbon black (CB) is built by the ball milling dispersion process. Due to the low percolation threshold network formed by GNSs/CNTs/CB, the prepared ink has excellent conductivity, and the square resistance (Rsq) reaches 4.3 Ω sq–1 with a thickness of 25 μm. Moreover, the saturation temperature (Ts) of the screen-printed electrothermal film (4 cm × 4 cm) can reach 165 °C with an input voltage of 10 V, and it has extremely low power consumption (444.75 cm2 W–1). The electrothermal film also maintains relatively stable electrical properties in a bending test of 115 000 cycles. When the heating device (9 cm × 31 cm) is applied to the expanded polypropylene (EPP) box, the food temperature can be kept around 60 °C and the flavor can be well preserved.
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